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Finding the Fourth Proportional to 66,345.70, 99,518.55 and 65,252.20

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Solution

The fourth proportional to 66,345.70, 99,518.55 and 65,252.20 is: 97,878.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,345.70 : 99,518.55 = 65,252.20 : x
  2. Step 2: Convert to fraction form
    66,345.70/99,518.55 = 65,252.20/x
  3. Step 3: Cross multiply
    66,345.70x = 99,518.55 × 65,252.20
  4. Step 4: Simplify right side
    66,345.70x = 6,493,804,328.31
  5. Step 5: Solve for x
    x = 6,493,804,328.31/66,345.70
  6. Step 6: Final answer
    x = 97,878.30

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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.