Home / 287,637.42-431,426.97-77,248.02

Finding the Fourth Proportional to 287,637.42, 431,426.97 and 77,248.02

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Solution

The fourth proportional to 287,637.42, 431,426.97 and 77,248.02 is: 115,864.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,637.42 : 431,426.97 = 77,248.02 : x
  2. Step 2: Convert to fraction form
    287,637.42/431,426.97 = 77,248.02/x
  3. Step 3: Cross multiply
    287,637.42x = 431,426.97 × 77,248.02
  4. Step 4: Simplify right side
    287,637.42x = 33,326,879,207.10
  5. Step 5: Solve for x
    x = 33,326,879,207.10/287,637.42
  6. Step 6: Final answer
    x = 115,864.20

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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.