Home / 91,603.29-137,426.40-28,420.19

Finding the Fourth Proportional to 91,603.29, 137,426.40 and 28,420.19

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Solution

The fourth proportional to 91,603.29, 137,426.40 and 28,420.19 is: 42,636.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,603.29 : 137,426.40 = 28,420.19 : x
  2. Step 2: Convert to fraction form
    91,603.29/137,426.40 = 28,420.19/x
  3. Step 3: Cross multiply
    91,603.29x = 137,426.40 × 28,420.19
  4. Step 4: Simplify right side
    91,603.29x = 3,905,683,711.88
  5. Step 5: Solve for x
    x = 3,905,683,711.88/91,603.29
  6. Step 6: Final answer
    x = 42,636.94

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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.