Home / 85,536,036.40-128,304,054.60-71,175,319.60

Finding the Fourth Proportional to 85,536,036.40, 128,304,054.60 and 71,175,319.60

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Solution

The fourth proportional to 85,536,036.40, 128,304,054.60 and 71,175,319.60 is: 106,762,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,036.40 : 128,304,054.60 = 71,175,319.60 : x
  2. Step 2: Convert to fraction form
    85,536,036.40/128,304,054.60 = 71,175,319.60/x
  3. Step 3: Cross multiply
    85,536,036.40x = 128,304,054.60 × 71,175,319.60
  4. Step 4: Simplify right side
    85,536,036.40x = 9,132,082,092,130,848
  5. Step 5: Solve for x
    x = 9,132,082,092,130,848/85,536,036.40
  6. Step 6: Final answer
    x = 106,762,979.40

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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.