Home / 85,812,577.20-128,768,632.20-31,965,332.40

Finding the Fourth Proportional to 85,812,577.20, 128,768,632.20 and 31,965,332.40

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Solution

The fourth proportional to 85,812,577.20, 128,768,632.20 and 31,965,332.40 is: 47,966,536.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,812,577.20 : 128,768,632.20 = 31,965,332.40 : x
  2. Step 2: Convert to fraction form
    85,812,577.20/128,768,632.20 = 31,965,332.40/x
  3. Step 3: Cross multiply
    85,812,577.20x = 128,768,632.20 × 31,965,332.40
  4. Step 4: Simplify right side
    85,812,577.20x = 4,116,132,130,966,343
  5. Step 5: Solve for x
    x = 4,116,132,130,966,343/85,812,577.20
  6. Step 6: Final answer
    x = 47,966,536.67

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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.