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Finding the Fourth Proportional to 63,641.36, 87,890.32 and 47,700.56

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Solution

The fourth proportional to 63,641.36, 87,890.32 and 47,700.56 is: 65,875.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,641.36 : 87,890.32 = 47,700.56 : x
  2. Step 2: Convert to fraction form
    63,641.36/87,890.32 = 47,700.56/x
  3. Step 3: Cross multiply
    63,641.36x = 87,890.32 × 47,700.56
  4. Step 4: Simplify right side
    63,641.36x = 4,192,417,482.58
  5. Step 5: Solve for x
    x = 4,192,417,482.58/63,641.36
  6. Step 6: Final answer
    x = 65,875.67

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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.