Home / 78,545,781.23-117,632,017.94-39,561,594.53

Finding the Fourth Proportional to 78,545,781.23, 117,632,017.94 and 39,561,594.53

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Solution

The fourth proportional to 78,545,781.23, 117,632,017.94 and 39,561,594.53 is: 59,248,378.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,545,781.23 : 117,632,017.94 = 39,561,594.53 : x
  2. Step 2: Convert to fraction form
    78,545,781.23/117,632,017.94 = 39,561,594.53/x
  3. Step 3: Cross multiply
    78,545,781.23x = 117,632,017.94 × 39,561,594.53
  4. Step 4: Simplify right side
    78,545,781.23x = 4,653,710,196,701,998
  5. Step 5: Solve for x
    x = 4,653,710,196,701,998/78,545,781.23
  6. Step 6: Final answer
    x = 59,248,378.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.