Home / 51,398.04-70,930.80-28,736.40

Finding the Fourth Proportional to 51,398.04, 70,930.80 and 28,736.40

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Solution

The fourth proportional to 51,398.04, 70,930.80 and 28,736.40 is: 39,657.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,398.04 : 70,930.80 = 28,736.40 : x
  2. Step 2: Convert to fraction form
    51,398.04/70,930.80 = 28,736.40/x
  3. Step 3: Cross multiply
    51,398.04x = 70,930.80 × 28,736.40
  4. Step 4: Simplify right side
    51,398.04x = 2,038,295,841.12
  5. Step 5: Solve for x
    x = 2,038,295,841.12/51,398.04
  6. Step 6: Final answer
    x = 39,657.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.