Home / 287,444.92-431,134.58-77,066.50

Finding the Fourth Proportional to 287,444.92, 431,134.58 and 77,066.50

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Solution

The fourth proportional to 287,444.92, 431,134.58 and 77,066.50 is: 115,590.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,444.92 : 431,134.58 = 77,066.50 : x
  2. Step 2: Convert to fraction form
    287,444.92/431,134.58 = 77,066.50/x
  3. Step 3: Cross multiply
    287,444.92x = 431,134.58 × 77,066.50
  4. Step 4: Simplify right side
    287,444.92x = 33,226,032,724.24
  5. Step 5: Solve for x
    x = 33,226,032,724.24/287,444.92
  6. Step 6: Final answer
    x = 115,590.95

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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.