Home / 39,281,981.51-54,210,823.95-21,878,334.47

Finding the Fourth Proportional to 39,281,981.51, 54,210,823.95 and 21,878,334.47

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Solution

The fourth proportional to 39,281,981.51, 54,210,823.95 and 21,878,334.47 is: 30,193,042.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,281,981.51 : 54,210,823.95 = 21,878,334.47 : x
  2. Step 2: Convert to fraction form
    39,281,981.51/54,210,823.95 = 21,878,334.47/x
  3. Step 3: Cross multiply
    39,281,981.51x = 54,210,823.95 × 21,878,334.47
  4. Step 4: Simplify right side
    39,281,981.51x = 1,186,042,538,001,332.50
  5. Step 5: Solve for x
    x = 1,186,042,538,001,332.50/39,281,981.51
  6. Step 6: Final answer
    x = 30,193,042.52

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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.