Home / 86,038.47-129,139.79-52,823.41

Finding the Fourth Proportional to 86,038.47, 129,139.79 and 52,823.41

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Solution

The fourth proportional to 86,038.47, 129,139.79 and 52,823.41 is: 79,285.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,038.47 : 129,139.79 = 52,823.41 : x
  2. Step 2: Convert to fraction form
    86,038.47/129,139.79 = 52,823.41/x
  3. Step 3: Cross multiply
    86,038.47x = 129,139.79 × 52,823.41
  4. Step 4: Simplify right side
    86,038.47x = 6,821,603,428.78
  5. Step 5: Solve for x
    x = 6,821,603,428.78/86,038.47
  6. Step 6: Final answer
    x = 79,285.51

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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.