Home / 91,939,781.80-137,928,335.10-31,361,631.40

Finding the Fourth Proportional to 91,939,781.80, 137,928,335.10 and 31,361,631.40

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Solution

The fourth proportional to 91,939,781.80, 137,928,335.10 and 31,361,631.40 is: 47,048,813.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,939,781.80 : 137,928,335.10 = 31,361,631.40 : x
  2. Step 2: Convert to fraction form
    91,939,781.80/137,928,335.10 = 31,361,631.40/x
  3. Step 3: Cross multiply
    91,939,781.80x = 137,928,335.10 × 31,361,631.40
  4. Step 4: Simplify right side
    91,939,781.80x = 4,325,657,605,021,881.50
  5. Step 5: Solve for x
    x = 4,325,657,605,021,881.50/91,939,781.80
  6. Step 6: Final answer
    x = 47,048,813.04

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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.