Home / 65,911.28-90,884.68-42,000.08

Finding the Fourth Proportional to 65,911.28, 90,884.68 and 42,000.08

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Solution

The fourth proportional to 65,911.28, 90,884.68 and 42,000.08 is: 57,913.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911.28 : 90,884.68 = 42,000.08 : x
  2. Step 2: Convert to fraction form
    65,911.28/90,884.68 = 42,000.08/x
  3. Step 3: Cross multiply
    65,911.28x = 90,884.68 × 42,000.08
  4. Step 4: Simplify right side
    65,911.28x = 3,817,163,830.77
  5. Step 5: Solve for x
    x = 3,817,163,830.77/65,911.28
  6. Step 6: Final answer
    x = 57,913.67

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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.