Home / 72,442,102.74-99,970,823.01-39,403,120.50

Finding the Fourth Proportional to 72,442,102.74, 99,970,823.01 and 39,403,120.50

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Solution

The fourth proportional to 72,442,102.74, 99,970,823.01 and 39,403,120.50 is: 54,376,698.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,442,102.74 : 99,970,823.01 = 39,403,120.50 : x
  2. Step 2: Convert to fraction form
    72,442,102.74/99,970,823.01 = 39,403,120.50/x
  3. Step 3: Cross multiply
    72,442,102.74x = 99,970,823.01 × 39,403,120.50
  4. Step 4: Simplify right side
    72,442,102.74x = 3,939,162,385,547,203
  5. Step 5: Solve for x
    x = 3,939,162,385,547,203/72,442,102.74
  6. Step 6: Final answer
    x = 54,376,698.58

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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.