Home / 66,417.95-99,646.27-21,438.34

Finding the Fourth Proportional to 66,417.95, 99,646.27 and 21,438.34

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Solution

The fourth proportional to 66,417.95, 99,646.27 and 21,438.34 is: 32,163.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,417.95 : 99,646.27 = 21,438.34 : x
  2. Step 2: Convert to fraction form
    66,417.95/99,646.27 = 21,438.34/x
  3. Step 3: Cross multiply
    66,417.95x = 99,646.27 × 21,438.34
  4. Step 4: Simplify right side
    66,417.95x = 2,136,250,313.28
  5. Step 5: Solve for x
    x = 2,136,250,313.28/66,417.95
  6. Step 6: Final answer
    x = 32,163.75

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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.