Home / 78,870.98-118,325.30-26,280.92

Finding the Fourth Proportional to 78,870.98, 118,325.30 and 26,280.92

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Solution

The fourth proportional to 78,870.98, 118,325.30 and 26,280.92 is: 39,427.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,870.98 : 118,325.30 = 26,280.92 : x
  2. Step 2: Convert to fraction form
    78,870.98/118,325.30 = 26,280.92/x
  3. Step 3: Cross multiply
    78,870.98x = 118,325.30 × 26,280.92
  4. Step 4: Simplify right side
    78,870.98x = 3,109,697,743.28
  5. Step 5: Solve for x
    x = 3,109,697,743.28/78,870.98
  6. Step 6: Final answer
    x = 39,427.65

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1.5x scale

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.