Home / 81,668,357.10-112,710,275.10-61,005,931.02

Finding the Fourth Proportional to 81,668,357.10, 112,710,275.10 and 61,005,931.02

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Solution

The fourth proportional to 81,668,357.10, 112,710,275.10 and 61,005,931.02 is: 84,194,117.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,668,357.10 : 112,710,275.10 = 61,005,931.02 : x
  2. Step 2: Convert to fraction form
    81,668,357.10/112,710,275.10 = 61,005,931.02/x
  3. Step 3: Cross multiply
    81,668,357.10x = 112,710,275.10 × 61,005,931.02
  4. Step 4: Simplify right side
    81,668,357.10x = 6,875,995,267,995,824
  5. Step 5: Solve for x
    x = 6,875,995,267,995,824/81,668,357.10
  6. Step 6: Final answer
    x = 84,194,117.67

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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.