Home / 103,038.80-154,565.40-40,701.20

Finding the Fourth Proportional to 103,038.80, 154,565.40 and 40,701.20

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Solution

The fourth proportional to 103,038.80, 154,565.40 and 40,701.20 is: 61,054.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,038.80 : 154,565.40 = 40,701.20 : x
  2. Step 2: Convert to fraction form
    103,038.80/154,565.40 = 40,701.20/x
  3. Step 3: Cross multiply
    103,038.80x = 154,565.40 × 40,701.20
  4. Step 4: Simplify right side
    103,038.80x = 6,290,997,258.48
  5. Step 5: Solve for x
    x = 6,290,997,258.48/103,038.80
  6. Step 6: Final answer
    x = 61,054.64

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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.