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Finding the Fourth Proportional to 85,850.90, 128,776.35 and 48,526.10

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Solution

The fourth proportional to 85,850.90, 128,776.35 and 48,526.10 is: 72,789.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,850.90 : 128,776.35 = 48,526.10 : x
  2. Step 2: Convert to fraction form
    85,850.90/128,776.35 = 48,526.10/x
  3. Step 3: Cross multiply
    85,850.90x = 128,776.35 × 48,526.10
  4. Step 4: Simplify right side
    85,850.90x = 6,249,014,037.74
  5. Step 5: Solve for x
    x = 6,249,014,037.74/85,850.90
  6. Step 6: Final answer
    x = 72,789.15

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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.