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Finding the Fourth Proportional to 71,224.61, 98,291.93 and 39,395.55

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Solution

The fourth proportional to 71,224.61, 98,291.93 and 39,395.55 is: 54,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,224.61 : 98,291.93 = 39,395.55 : x
  2. Step 2: Convert to fraction form
    71,224.61/98,291.93 = 39,395.55/x
  3. Step 3: Cross multiply
    71,224.61x = 98,291.93 × 39,395.55
  4. Step 4: Simplify right side
    71,224.61x = 3,872,264,445.93
  5. Step 5: Solve for x
    x = 3,872,264,445.93/71,224.61
  6. Step 6: Final answer
    x = 54,366.95

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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.