Home / 78,374.13-108,157.59-42,564.17

Finding the Fourth Proportional to 78,374.13, 108,157.59 and 42,564.17

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Solution

The fourth proportional to 78,374.13, 108,157.59 and 42,564.17 is: 58,739.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,374.13 : 108,157.59 = 42,564.17 : x
  2. Step 2: Convert to fraction form
    78,374.13/108,157.59 = 42,564.17/x
  3. Step 3: Cross multiply
    78,374.13x = 108,157.59 × 42,564.17
  4. Step 4: Simplify right side
    78,374.13x = 4,603,637,506.76
  5. Step 5: Solve for x
    x = 4,603,637,506.76/78,374.13
  6. Step 6: Final answer
    x = 58,739.25

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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.