Home / 77,905.67-107,492.47-47,688.62

Finding the Fourth Proportional to 77,905.67, 107,492.47 and 47,688.62

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Solution

The fourth proportional to 77,905.67, 107,492.47 and 47,688.62 is: 65,799.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,905.67 : 107,492.47 = 47,688.62 : x
  2. Step 2: Convert to fraction form
    77,905.67/107,492.47 = 47,688.62/x
  3. Step 3: Cross multiply
    77,905.67x = 107,492.47 × 47,688.62
  4. Step 4: Simplify right side
    77,905.67x = 5,126,166,898.01
  5. Step 5: Solve for x
    x = 5,126,166,898.01/77,905.67
  6. Step 6: Final answer
    x = 65,799.67

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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.