Home / 78,567.06-108,424.85-42,759.39

Finding the Fourth Proportional to 78,567.06, 108,424.85 and 42,759.39

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Solution

The fourth proportional to 78,567.06, 108,424.85 and 42,759.39 is: 59,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,567.06 : 108,424.85 = 42,759.39 : x
  2. Step 2: Convert to fraction form
    78,567.06/108,424.85 = 42,759.39/x
  3. Step 3: Cross multiply
    78,567.06x = 108,424.85 × 42,759.39
  4. Step 4: Simplify right side
    78,567.06x = 4,636,180,639.64
  5. Step 5: Solve for x
    x = 4,636,180,639.64/78,567.06
  6. Step 6: Final answer
    x = 59,009.21

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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.