Home / 56,302.72-77,693.28-31,150.40

Finding the Fourth Proportional to 56,302.72, 77,693.28 and 31,150.40

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Solution

The fourth proportional to 56,302.72, 77,693.28 and 31,150.40 is: 42,985.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,302.72 : 77,693.28 = 31,150.40 : x
  2. Step 2: Convert to fraction form
    56,302.72/77,693.28 = 31,150.40/x
  3. Step 3: Cross multiply
    56,302.72x = 77,693.28 × 31,150.40
  4. Step 4: Simplify right side
    56,302.72x = 2,420,176,749.31
  5. Step 5: Solve for x
    x = 2,420,176,749.31/56,302.72
  6. Step 6: Final answer
    x = 42,985.08

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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.