Home / 56,913.62-78,562.32-42,807.20

Finding the Fourth Proportional to 56,913.62, 78,562.32 and 42,807.20

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Solution

The fourth proportional to 56,913.62, 78,562.32 and 42,807.20 is: 59,090.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,913.62 : 78,562.32 = 42,807.20 : x
  2. Step 2: Convert to fraction form
    56,913.62/78,562.32 = 42,807.20/x
  3. Step 3: Cross multiply
    56,913.62x = 78,562.32 × 42,807.20
  4. Step 4: Simplify right side
    56,913.62x = 3,363,032,944.70
  5. Step 5: Solve for x
    x = 3,363,032,944.70/56,913.62
  6. Step 6: Final answer
    x = 59,090.13

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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.