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Finding the Fourth Proportional to 56,377.91, 77,798.18 and 30,879.19

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Solution

The fourth proportional to 56,377.91, 77,798.18 and 30,879.19 is: 42,611.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,377.91 : 77,798.18 = 30,879.19 : x
  2. Step 2: Convert to fraction form
    56,377.91/77,798.18 = 30,879.19/x
  3. Step 3: Cross multiply
    56,377.91x = 77,798.18 × 30,879.19
  4. Step 4: Simplify right side
    56,377.91x = 2,402,344,432.98
  5. Step 5: Solve for x
    x = 2,402,344,432.98/56,377.91
  6. Step 6: Final answer
    x = 42,611.45

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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.