Home / 42,948.80-64,423.20-25,409.60

Finding the Fourth Proportional to 42,948.80, 64,423.20 and 25,409.60

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Solution

The fourth proportional to 42,948.80, 64,423.20 and 25,409.60 is: 38,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,948.80 : 64,423.20 = 25,409.60 : x
  2. Step 2: Convert to fraction form
    42,948.80/64,423.20 = 25,409.60/x
  3. Step 3: Cross multiply
    42,948.80x = 64,423.20 × 25,409.60
  4. Step 4: Simplify right side
    42,948.80x = 1,636,967,742.72
  5. Step 5: Solve for x
    x = 1,636,967,742.72/42,948.80
  6. Step 6: Final answer
    x = 38,114.40

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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.