Home / 287,823.15-431,695.83-77,473.71

Finding the Fourth Proportional to 287,823.15, 431,695.83 and 77,473.71

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Solution

The fourth proportional to 287,823.15, 431,695.83 and 77,473.71 is: 116,200.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,823.15 : 431,695.83 = 77,473.71 : x
  2. Step 2: Convert to fraction form
    287,823.15/431,695.83 = 77,473.71/x
  3. Step 3: Cross multiply
    287,823.15x = 431,695.83 × 77,473.71
  4. Step 4: Simplify right side
    287,823.15x = 33,445,077,541.63
  5. Step 5: Solve for x
    x = 33,445,077,541.63/287,823.15
  6. Step 6: Final answer
    x = 116,200.10

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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.