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Finding the Fourth Proportional to 56,437.58, 77,879.25 and 30,943.50

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Solution

The fourth proportional to 56,437.58, 77,879.25 and 30,943.50 is: 42,699.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,437.58 : 77,879.25 = 30,943.50 : x
  2. Step 2: Convert to fraction form
    56,437.58/77,879.25 = 30,943.50/x
  3. Step 3: Cross multiply
    56,437.58x = 77,879.25 × 30,943.50
  4. Step 4: Simplify right side
    56,437.58x = 2,409,856,572.38
  5. Step 5: Solve for x
    x = 2,409,856,572.38/56,437.58
  6. Step 6: Final answer
    x = 42,699.51

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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.