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Finding the Fourth Proportional to 93,539.78, 129,043.88 and 57,242.97

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Solution

The fourth proportional to 93,539.78, 129,043.88 and 57,242.97 is: 78,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,539.78 : 129,043.88 = 57,242.97 : x
  2. Step 2: Convert to fraction form
    93,539.78/129,043.88 = 57,242.97/x
  3. Step 3: Cross multiply
    93,539.78x = 129,043.88 × 57,242.97
  4. Step 4: Simplify right side
    93,539.78x = 7,386,855,094.63
  5. Step 5: Solve for x
    x = 7,386,855,094.63/93,539.78
  6. Step 6: Final answer
    x = 78,970.20

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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.