Home / 52,099.60-78,148.34-12,656.92

Finding the Fourth Proportional to 52,099.60, 78,148.34 and 12,656.92

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Solution

The fourth proportional to 52,099.60, 78,148.34 and 12,656.92 is: 18,985.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,099.60 : 78,148.34 = 12,656.92 : x
  2. Step 2: Convert to fraction form
    52,099.60/78,148.34 = 12,656.92/x
  3. Step 3: Cross multiply
    52,099.60x = 78,148.34 × 12,656.92
  4. Step 4: Simplify right side
    52,099.60x = 989,117,287.51
  5. Step 5: Solve for x
    x = 989,117,287.51/52,099.60
  6. Step 6: Final answer
    x = 18,985.12

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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.