Home / 64,778.13-97,141.55-31,488.35

Finding the Fourth Proportional to 64,778.13, 97,141.55 and 31,488.35

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Solution

The fourth proportional to 64,778.13, 97,141.55 and 31,488.35 is: 47,220.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,778.13 : 97,141.55 = 31,488.35 : x
  2. Step 2: Convert to fraction form
    64,778.13/97,141.55 = 31,488.35/x
  3. Step 3: Cross multiply
    64,778.13x = 97,141.55 × 31,488.35
  4. Step 4: Simplify right side
    64,778.13x = 3,058,826,482.79
  5. Step 5: Solve for x
    x = 3,058,826,482.79/64,778.13
  6. Step 6: Final answer
    x = 47,220.05

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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.