Home / 72,413,756.92-99,930,290.64-39,374,018.16

Finding the Fourth Proportional to 72,413,756.92, 99,930,290.64 and 39,374,018.16

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Solution

The fourth proportional to 72,413,756.92, 99,930,290.64 and 39,374,018.16 is: 54,335,767.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,413,756.92 : 99,930,290.64 = 39,374,018.16 : x
  2. Step 2: Convert to fraction form
    72,413,756.92/99,930,290.64 = 39,374,018.16/x
  3. Step 3: Cross multiply
    72,413,756.92x = 99,930,290.64 × 39,374,018.16
  4. Step 4: Simplify right side
    72,413,756.92x = 3,934,657,078,393,437.50
  5. Step 5: Solve for x
    x = 3,934,657,078,393,437.50/72,413,756.92
  6. Step 6: Final answer
    x = 54,335,767.76

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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.