Home / 90,027.79-135,027.51-56,645.66

Finding the Fourth Proportional to 90,027.79, 135,027.51 and 56,645.66

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Solution

The fourth proportional to 90,027.79, 135,027.51 and 56,645.66 is: 84,959.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,027.79 : 135,027.51 = 56,645.66 : x
  2. Step 2: Convert to fraction form
    90,027.79/135,027.51 = 56,645.66/x
  3. Step 3: Cross multiply
    90,027.79x = 135,027.51 × 56,645.66
  4. Step 4: Simplify right side
    90,027.79x = 7,648,722,547.25
  5. Step 5: Solve for x
    x = 7,648,722,547.25/90,027.79
  6. Step 6: Final answer
    x = 84,959.57

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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.