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Finding the Fourth Proportional to 30,601,387.80, 45,902,081.70 and 21,513,746.70

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Solution

The fourth proportional to 30,601,387.80, 45,902,081.70 and 21,513,746.70 is: 32,270,620.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,601,387.80 : 45,902,081.70 = 21,513,746.70 : x
  2. Step 2: Convert to fraction form
    30,601,387.80/45,902,081.70 = 21,513,746.70/x
  3. Step 3: Cross multiply
    30,601,387.80x = 45,902,081.70 × 21,513,746.70
  4. Step 4: Simplify right side
    30,601,387.80x = 987,525,758,696,505.38
  5. Step 5: Solve for x
    x = 987,525,758,696,505.38/30,601,387.80
  6. Step 6: Final answer
    x = 32,270,620.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.