Home / 61,143.28-84,374.76-34,288.72

Finding the Fourth Proportional to 61,143.28, 84,374.76 and 34,288.72

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Solution

The fourth proportional to 61,143.28, 84,374.76 and 34,288.72 is: 47,316.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,143.28 : 84,374.76 = 34,288.72 : x
  2. Step 2: Convert to fraction form
    61,143.28/84,374.76 = 34,288.72/x
  3. Step 3: Cross multiply
    61,143.28x = 84,374.76 × 34,288.72
  4. Step 4: Simplify right side
    61,143.28x = 2,893,102,520.71
  5. Step 5: Solve for x
    x = 2,893,102,520.71/61,143.28
  6. Step 6: Final answer
    x = 47,316.77

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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.