Home / 77,783,417.32-107,343,280.26-42,978,350.44

Finding the Fourth Proportional to 77,783,417.32, 107,343,280.26 and 42,978,350.44

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Solution

The fourth proportional to 77,783,417.32, 107,343,280.26 and 42,978,350.44 is: 59,311,319.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,783,417.32 : 107,343,280.26 = 42,978,350.44 : x
  2. Step 2: Convert to fraction form
    77,783,417.32/107,343,280.26 = 42,978,350.44/x
  3. Step 3: Cross multiply
    77,783,417.32x = 107,343,280.26 × 42,978,350.44
  4. Step 4: Simplify right side
    77,783,417.32x = 4,613,437,116,393,414
  5. Step 5: Solve for x
    x = 4,613,437,116,393,414/77,783,417.32
  6. Step 6: Final answer
    x = 59,311,319.50

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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.