Home / 90,784.14-136,176.21-28,459.50

Finding the Fourth Proportional to 90,784.14, 136,176.21 and 28,459.50

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Solution

The fourth proportional to 90,784.14, 136,176.21 and 28,459.50 is: 42,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,784.14 : 136,176.21 = 28,459.50 : x
  2. Step 2: Convert to fraction form
    90,784.14/136,176.21 = 28,459.50/x
  3. Step 3: Cross multiply
    90,784.14x = 136,176.21 × 28,459.50
  4. Step 4: Simplify right side
    90,784.14x = 3,875,506,848.50
  5. Step 5: Solve for x
    x = 3,875,506,848.50/90,784.14
  6. Step 6: Final answer
    x = 42,689.25

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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.