Home / 81,386,302.32-112,285,319.85-50,435,178.48

Finding the Fourth Proportional to 81,386,302.32, 112,285,319.85 and 50,435,178.48

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Solution

The fourth proportional to 81,386,302.32, 112,285,319.85 and 50,435,178.48 is: 69,583,332.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,386,302.32 : 112,285,319.85 = 50,435,178.48 : x
  2. Step 2: Convert to fraction form
    81,386,302.32/112,285,319.85 = 50,435,178.48/x
  3. Step 3: Cross multiply
    81,386,302.32x = 112,285,319.85 × 50,435,178.48
  4. Step 4: Simplify right side
    81,386,302.32x = 5,663,130,147,318,636
  5. Step 5: Solve for x
    x = 5,663,130,147,318,636/81,386,302.32
  6. Step 6: Final answer
    x = 69,583,332.65

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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.