Home / 30,845,223.20-42,513,277.20-20,513,485.28

Finding the Fourth Proportional to 30,845,223.20, 42,513,277.20 and 20,513,485.28

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Solution

The fourth proportional to 30,845,223.20, 42,513,277.20 and 20,513,485.28 is: 28,273,275.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,845,223.20 : 42,513,277.20 = 20,513,485.28 : x
  2. Step 2: Convert to fraction form
    30,845,223.20/42,513,277.20 = 20,513,485.28/x
  3. Step 3: Cross multiply
    30,845,223.20x = 42,513,277.20 × 20,513,485.28
  4. Step 4: Simplify right side
    30,845,223.20x = 872,095,486,046,759.75
  5. Step 5: Solve for x
    x = 872,095,486,046,759.75/30,845,223.20
  6. Step 6: Final answer
    x = 28,273,275.26

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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.