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Finding the Fourth Proportional to 65,525.40, 90,444.50 and 42,554.60

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Solution

The fourth proportional to 65,525.40, 90,444.50 and 42,554.60 is: 58,737.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,525.40 : 90,444.50 = 42,554.60 : x
  2. Step 2: Convert to fraction form
    65,525.40/90,444.50 = 42,554.60/x
  3. Step 3: Cross multiply
    65,525.40x = 90,444.50 × 42,554.60
  4. Step 4: Simplify right side
    65,525.40x = 3,848,829,519.70
  5. Step 5: Solve for x
    x = 3,848,829,519.70/65,525.40
  6. Step 6: Final answer
    x = 58,737.98

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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.