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Finding the Fourth Proportional to 34,681,156.15, 47,859,978.84 and 20,742,511.01

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Solution

The fourth proportional to 34,681,156.15, 47,859,978.84 and 20,742,511.01 is: 28,624,655.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,681,156.15 : 47,859,978.84 = 20,742,511.01 : x
  2. Step 2: Convert to fraction form
    34,681,156.15/47,859,978.84 = 20,742,511.01/x
  3. Step 3: Cross multiply
    34,681,156.15x = 47,859,978.84 × 20,742,511.01
  4. Step 4: Simplify right side
    34,681,156.15x = 992,736,137,787,767.12
  5. Step 5: Solve for x
    x = 992,736,137,787,767.12/34,681,156.15
  6. Step 6: Final answer
    x = 28,624,655.23

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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.