Home / 66,618.57-99,878.45-40,317.06

Finding the Fourth Proportional to 66,618.57, 99,878.45 and 40,317.06

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Solution

The fourth proportional to 66,618.57, 99,878.45 and 40,317.06 is: 60,445.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,618.57 : 99,878.45 = 40,317.06 : x
  2. Step 2: Convert to fraction form
    66,618.57/99,878.45 = 40,317.06/x
  3. Step 3: Cross multiply
    66,618.57x = 99,878.45 × 40,317.06
  4. Step 4: Simplify right side
    66,618.57x = 4,026,805,259.77
  5. Step 5: Solve for x
    x = 4,026,805,259.77/66,618.57
  6. Step 6: Final answer
    x = 60,445.69

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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.