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Finding the Fourth Proportional to 89,875.80, 134,813.70 and 60,307.80

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Solution

The fourth proportional to 89,875.80, 134,813.70 and 60,307.80 is: 90,461.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,875.80 : 134,813.70 = 60,307.80 : x
  2. Step 2: Convert to fraction form
    89,875.80/134,813.70 = 60,307.80/x
  3. Step 3: Cross multiply
    89,875.80x = 134,813.70 × 60,307.80
  4. Step 4: Simplify right side
    89,875.80x = 8,130,317,656.86
  5. Step 5: Solve for x
    x = 8,130,317,656.86/89,875.80
  6. Step 6: Final answer
    x = 90,461.70

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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.