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Finding the Fourth Proportional to 61,387, 84,718.34 and 34,532.08

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Solution

The fourth proportional to 61,387, 84,718.34 and 34,532.08 is: 47,656.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,387 : 84,718.34 = 34,532.08 : x
  2. Step 2: Convert to fraction form
    61,387/84,718.34 = 34,532.08/x
  3. Step 3: Cross multiply
    61,387x = 84,718.34 × 34,532.08
  4. Step 4: Simplify right side
    61,387x = 2,925,500,494.35
  5. Step 5: Solve for x
    x = 2,925,500,494.35/61,387
  6. Step 6: Final answer
    x = 47,656.68

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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.