Home / 67,703.12-93,440.08-39,424.40

Finding the Fourth Proportional to 67,703.12, 93,440.08 and 39,424.40

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Solution

The fourth proportional to 67,703.12, 93,440.08 and 39,424.40 is: 54,411.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,703.12 : 93,440.08 = 39,424.40 : x
  2. Step 2: Convert to fraction form
    67,703.12/93,440.08 = 39,424.40/x
  3. Step 3: Cross multiply
    67,703.12x = 93,440.08 × 39,424.40
  4. Step 4: Simplify right side
    67,703.12x = 3,683,819,089.95
  5. Step 5: Solve for x
    x = 3,683,819,089.95/67,703.12
  6. Step 6: Final answer
    x = 54,411.36

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1.5x scale

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.