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Finding the Fourth Proportional to 70,030.91, 105,046.37 and 25,639.67

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Solution

The fourth proportional to 70,030.91, 105,046.37 and 25,639.67 is: 38,459.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,030.91 : 105,046.37 = 25,639.67 : x
  2. Step 2: Convert to fraction form
    70,030.91/105,046.37 = 25,639.67/x
  3. Step 3: Cross multiply
    70,030.91x = 105,046.37 × 25,639.67
  4. Step 4: Simplify right side
    70,030.91x = 2,693,354,492.06
  5. Step 5: Solve for x
    x = 2,693,354,492.06/70,030.91
  6. Step 6: Final answer
    x = 38,459.51

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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.