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Finding the Fourth Proportional to 101,488.80, 140,020.40 and 59,012.40

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Solution

The fourth proportional to 101,488.80, 140,020.40 and 59,012.40 is: 81,417.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,488.80 : 140,020.40 = 59,012.40 : x
  2. Step 2: Convert to fraction form
    101,488.80/140,020.40 = 59,012.40/x
  3. Step 3: Cross multiply
    101,488.80x = 140,020.40 × 59,012.40
  4. Step 4: Simplify right side
    101,488.80x = 8,262,939,852.96
  5. Step 5: Solve for x
    x = 8,262,939,852.96/101,488.80
  6. Step 6: Final answer
    x = 81,417.26

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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.