Home / 70,522.11-105,783.57-28,421.55

Finding the Fourth Proportional to 70,522.11, 105,783.57 and 28,421.55

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Solution

The fourth proportional to 70,522.11, 105,783.57 and 28,421.55 is: 42,632.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,522.11 : 105,783.57 = 28,421.55 : x
  2. Step 2: Convert to fraction form
    70,522.11/105,783.57 = 28,421.55/x
  3. Step 3: Cross multiply
    70,522.11x = 105,783.57 × 28,421.55
  4. Step 4: Simplify right side
    70,522.11x = 3,006,533,023.93
  5. Step 5: Solve for x
    x = 3,006,533,023.93/70,522.11
  6. Step 6: Final answer
    x = 42,632.49

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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.