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Finding the Fourth Proportional to 58,555.71, 87,864.31 and 31,920.79

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Solution

The fourth proportional to 58,555.71, 87,864.31 and 31,920.79 is: 47,897.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,555.71 : 87,864.31 = 31,920.79 : x
  2. Step 2: Convert to fraction form
    58,555.71/87,864.31 = 31,920.79/x
  3. Step 3: Cross multiply
    58,555.71x = 87,864.31 × 31,920.79
  4. Step 4: Simplify right side
    58,555.71x = 2,804,698,188.00
  5. Step 5: Solve for x
    x = 2,804,698,188.00/58,555.71
  6. Step 6: Final answer
    x = 47,897.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.