Home / 74,693.20-112,039.80-66,528.40

Finding the Fourth Proportional to 74,693.20, 112,039.80 and 66,528.40

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Solution

The fourth proportional to 74,693.20, 112,039.80 and 66,528.40 is: 99,792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,693.20 : 112,039.80 = 66,528.40 : x
  2. Step 2: Convert to fraction form
    74,693.20/112,039.80 = 66,528.40/x
  3. Step 3: Cross multiply
    74,693.20x = 112,039.80 × 66,528.40
  4. Step 4: Simplify right side
    74,693.20x = 7,453,828,630.32
  5. Step 5: Solve for x
    x = 7,453,828,630.32/74,693.20
  6. Step 6: Final answer
    x = 99,792.60

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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.