Home / 74,378.96-102,525-72,904.40

Finding the Fourth Proportional to 74,378.96, 102,525 and 72,904.40

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Solution

The fourth proportional to 74,378.96, 102,525 and 72,904.40 is: 100,492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,378.96 : 102,525 = 72,904.40 : x
  2. Step 2: Convert to fraction form
    74,378.96/102,525 = 72,904.40/x
  3. Step 3: Cross multiply
    74,378.96x = 102,525 × 72,904.40
  4. Step 4: Simplify right side
    74,378.96x = 7,474,523,610.00
  5. Step 5: Solve for x
    x = 7,474,523,610.00/74,378.96
  6. Step 6: Final answer
    x = 100,492.45

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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.