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Finding the Fourth Proportional to 61,881.47, 85,389.32 and 34,653.76

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Solution

The fourth proportional to 61,881.47, 85,389.32 and 34,653.76 is: 47,818.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,881.47 : 85,389.32 = 34,653.76 : x
  2. Step 2: Convert to fraction form
    61,881.47/85,389.32 = 34,653.76/x
  3. Step 3: Cross multiply
    61,881.47x = 85,389.32 × 34,653.76
  4. Step 4: Simplify right side
    61,881.47x = 2,959,060,875.00
  5. Step 5: Solve for x
    x = 2,959,060,875.00/61,881.47
  6. Step 6: Final answer
    x = 47,818.21

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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.