Home / 78,166,643.20-117,249,964.80-32,779,686.40

Finding the Fourth Proportional to 78,166,643.20, 117,249,964.80 and 32,779,686.40

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Solution

The fourth proportional to 78,166,643.20, 117,249,964.80 and 32,779,686.40 is: 49,169,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,643.20 : 117,249,964.80 = 32,779,686.40 : x
  2. Step 2: Convert to fraction form
    78,166,643.20/117,249,964.80 = 32,779,686.40/x
  3. Step 3: Cross multiply
    78,166,643.20x = 117,249,964.80 × 32,779,686.40
  4. Step 4: Simplify right side
    78,166,643.20x = 3,843,417,076,555,038.50
  5. Step 5: Solve for x
    x = 3,843,417,076,555,038.50/78,166,643.20
  6. Step 6: Final answer
    x = 49,169,529.60

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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.