Home / 97,875.12-135,065.40-57,036.66

Finding the Fourth Proportional to 97,875.12, 135,065.40 and 57,036.66

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Solution

The fourth proportional to 97,875.12, 135,065.40 and 57,036.66 is: 78,709.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,875.12 : 135,065.40 = 57,036.66 : x
  2. Step 2: Convert to fraction form
    97,875.12/135,065.40 = 57,036.66/x
  3. Step 3: Cross multiply
    97,875.12x = 135,065.40 × 57,036.66
  4. Step 4: Simplify right side
    97,875.12x = 7,703,679,297.56
  5. Step 5: Solve for x
    x = 7,703,679,297.56/97,875.12
  6. Step 6: Final answer
    x = 78,709.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.