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Finding the Fourth Proportional to 42,995.20, 64,492.80 and 36,774.40

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Solution

The fourth proportional to 42,995.20, 64,492.80 and 36,774.40 is: 55,161.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,995.20 : 64,492.80 = 36,774.40 : x
  2. Step 2: Convert to fraction form
    42,995.20/64,492.80 = 36,774.40/x
  3. Step 3: Cross multiply
    42,995.20x = 64,492.80 × 36,774.40
  4. Step 4: Simplify right side
    42,995.20x = 2,371,684,024.32
  5. Step 5: Solve for x
    x = 2,371,684,024.32/42,995.20
  6. Step 6: Final answer
    x = 55,161.60

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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.