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Finding the Fourth Proportional to 57,999.81, 87,394.89 and 47,700.60

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Solution

The fourth proportional to 57,999.81, 87,394.89 and 47,700.60 is: 71,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,999.81 : 87,394.89 = 47,700.60 : x
  2. Step 2: Convert to fraction form
    57,999.81/87,394.89 = 47,700.60/x
  3. Step 3: Cross multiply
    57,999.81x = 87,394.89 × 47,700.60
  4. Step 4: Simplify right side
    57,999.81x = 4,168,788,689.93
  5. Step 5: Solve for x
    x = 4,168,788,689.93/57,999.81
  6. Step 6: Final answer
    x = 71,875.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.