Home / 56,342.40-77,669.64-42,890.24

Finding the Fourth Proportional to 56,342.40, 77,669.64 and 42,890.24

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Solution

The fourth proportional to 56,342.40, 77,669.64 and 42,890.24 is: 59,125.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,342.40 : 77,669.64 = 42,890.24 : x
  2. Step 2: Convert to fraction form
    56,342.40/77,669.64 = 42,890.24/x
  3. Step 3: Cross multiply
    56,342.40x = 77,669.64 × 42,890.24
  4. Step 4: Simplify right side
    56,342.40x = 3,331,269,500.31
  5. Step 5: Solve for x
    x = 3,331,269,500.31/56,342.40
  6. Step 6: Final answer
    x = 59,125.45

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1.5x scale

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.